By Barry Holbrook: There’s a lot of questions about how much Gennadiy Golovkin (40-1-1, 35 KOs) has left as he heads into 2020 following his controversial 12 round unanimous decision win over Sergiy Derevyanchenko on October 5. After the scores were announced, Golovkin, 37, was basically booed out of Madison Square Garden in New York. […]